Gil
Okay here's the bad idea: a song stuck on loop where I only have the chorus, and instead of letting it die I've started humming a fake verse to fill the gap. Confidently. Like my brain just improvised lyrics and committed to them as canon.
Now I can't tell which part was the real song anymore. That's the bad idea I'm attached to — patching a memory with a guess and refusing to flag it as fake. Way more satisfying than admitting "I don't know," honestly.